JPH10181841A - Pipe conveyor provided with overload detector means - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the damage of the belt body of a conveyor and associated equipment as well as the rolling of the belt body when a load over the maximum loading capacity is applied to the conveyor by promptly detecting the load abnormal and stopping the operation of the conveyor, and to apply the conveyor to existing equipment. SOLUTION: A pipe conveyor employs movable rollers adapted to swing substantially in the transfer direction of a belt body 3 or the direction of the arrow X for three rollers 6b and the like arranged above a belt insertion hole as the center, and fixed rollers for three rollers arranged below the hole. The movable rollers 6b and the like are rotatably supported on the tips 5a of brackets 5 by means of pins 5b. The base ends 5c of the brackets 5 are normally pressed against a support frame by means of an urging means 10 each constituted of a bolt 7, nuts 8 and a spring 9 with predetermined elastic force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe conveyor having overload detecting means, and more particularly, to loading of a belt body when a load exceeding a maximum load occurs on the belt body during operation of the pipe conveyor. A pipe conveyor equipped with overload detection means for quickly detecting an abnormality in the amount and stopping the driving of the pipe conveyor to prevent damage to the belt body, equipment damage, and a rolling phenomenon of the belt body. It is about.

[0002]

2. Description of the Related Art Conventionally, when transporting powders such as cement, or powders or granules such as ore, the transported material is wrapped in a belt-shaped belt body so that the transported material does not fall off during transport. Pipe conveyors are known. Further, the belt body of the pipe conveyor is formed in an endless manner with the carrier side for transporting the goods and the return side of the belt body, that is, the return side, and the belt side on the carrier side from the supply part of the goods on the carrier side. It is configured to sequentially supply a predetermined amount (generally, the cross-sectional area of the pipe of the belt body × 0.75) on the body.

[0003]

By the way, when the pipe conveyor is in operation, as described above, the conveyed material having the maximum load capacity of the pipe cross-sectional area of the belt body × 0.75 is generally supplied. In some cases, a load exceeding the maximum load may be supplied onto the belt body, or a load larger than the pipe diameter may be loaded.In such a case, the conventional pipe conveyor may cause a load abnormality. Since there is no means for promptly detecting, the operation of the equipment cannot be stopped quickly, and the following problems have occurred.

[0004] That is, as described above, when a conveyed product larger than the maximum load capacity is supplied onto the belt body, or a conveyed product having a size larger than the pipe diameter is loaded and the belt body is rolled on a pipe and conveyed. Since the belt body is larger or flatter than the normal cross-sectional area, the lugs of the belt body (side edges in the width direction of the belt body) are attached to the support plate. Also, there is a problem that the pipe conveyor equipment may be damaged, such as being damaged by the belt insertion holes formed on the support plate and damaging the belt body and deforming the roller stand and roller bracket. There was a problem in that rolling occurred during the default running, making adjustment impossible.

The present invention has been devised in view of the above-mentioned conventional problems. When a load greater than the maximum load occurs on the belt body during operation of the pipe conveyor, a load amount abnormality is quickly detected. To stop driving the pipe conveyor,
Provided is a pipe conveyor provided with an overload detection means which can prevent damage to a belt body, damage to equipment, a rolling phenomenon of a belt body, and the like, and can be easily applied to existing equipment. It is intended to do so.

[0006]

In order to achieve the above object, according to the present invention, among the six rollers provided on the support plate,
At least one roller located above the center of the belt insertion hole is a movable roller that swings in the direction of movement of the belt body, and three rollers located below the center of the belt insertion hole are fixed rollers. The movable roller is constantly biased toward the support frame side via biasing means having a predetermined elastic force, and when the belt body is operated, a load equal to or greater than the maximum load on the belt body is generated, and the movable roller is moved. The gist of the present invention is to provide an abnormality detecting means for detecting an abnormality in the load amount of the belt main body when the belt swings in the transfer direction of the belt main body and outputting a stop signal to a driving means of the pipe conveyor.

The gist of the invention is that the movable roller and the abnormality detecting means for detecting an abnormality in the load amount are provided at least in the vicinity of the load supply section on the carrier side. The urging means comprises a spring and a fluid cylinder. Further, the abnormality detecting means is constituted by an optical detector such as a limit switch, a photoelectric tube, and a laser beam.

The present invention is configured as described above, and when a load greater than the maximum load occurs on the belt body during the operation of the pipe conveyor, that is, when a load greater than the maximum load is supplied to the belt body. The movable body is urged by the transfer force of the belt body because the belt body is caught by the rollers or the belt insertion hole formed in the support plate is caught by a transported object larger than the pipe diameter. When swinging in the transfer direction against the elastic force of the means, the abnormality detecting means arranged in the swinging direction of the movable roller detects an abnormality in the load capacity, and the emergency stop signal from the abnormality detecting means drives the pipe conveyor. Stop the means immediately.

As a result, problems such as damage to the belt body, deformation of the roller stand and the roller bracket, and other damage to the equipment can be prevented beforehand. As a result, rolling during belt running can be prevented and pipes can be prevented. The problem that the conveyor cannot be adjusted can be solved.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of a support plate 1 of a pipe conveyor according to an embodiment of the present invention, FIG. 2 is a plan view taken along the line AA of FIG. 1, and FIG. 3 is a side view taken along the line BB of FIG. As shown, the support plate 1 is erected on a transfer line of a pipe conveyor via a support frame 2 at a predetermined interval.

Belt insertion holes 4a and 4b through which the belt body 3 on the carrier side and the return side are inserted are inserted into the support plate 1.
The roller 6a to 6f are rotatably mounted on the belt insertion holes 4a and 4b via brackets 5 at the periphery of the belt insertion holes 4a and 4b. Of the rollers 6a to 6f disposed on the peripheral edge of the belt insertion hole 4a formed in the support plate 1 on the carrier side, three rollers 6a to 6f disposed above the belt insertion hole 4a as a center O. Roller 6
Reference numerals a, 6b, and 6c denote movable rollers that swing in the transport direction of the belt body 3 (in the direction of the arrow X), and three rollers 6d, 6e, and 6f located below the center O of the belt insertion hole 4a.
Is a fixed roller.

The movable rollers 6a, 6b and 6c are shown in FIG.
As shown in FIG. 3, the bracket 5 is rotatably supported on the tip 5a side of the bracket 5 via a pin 5b, and the base end 5c of the bracket 5 includes a bolt 7, a nut 8, and a spring 9 having a predetermined elastic force. It is attached so as to be constantly urged toward the support frame 2 side through an urging means 10 composed of the above.

Further, on the side of the movable body 6a, 6b, 6c in the direction of movement of the belt body, when the belt body 3 is operated, a load greater than the maximum load is generated on the belt body 3 so that the movable roller 6a, 6b, 6c can be moved. When the belts 6b, 6c swing in the direction of movement of the belt body 3, they come into contact with the movable rollers 6a, 6b, 6c,
An abnormality detecting means 11 such as a limit switch for detecting an abnormality in the load amount of the belt body 3 is provided.

The abnormality detecting means 11 is attached to the support plate 1 via a support member 12, and when the abnormality detecting means 11 detects an abnormality in the loading amount of the belt main body 3, it receives an emergency stop signal from the abnormality detecting means 11. It is configured to immediately stop a driving means (not shown) of the pipe conveyor.
The urging means 10 is not limited to the bolt 7, the nut 8, and the spring 9 having a predetermined elastic force, but may be a device having a predetermined elastic force such as a hydraulic or hydraulic cylinder. Further, the abnormality detecting means 11 is not limited to a limit switch for detecting an abnormality in the load, and an optical detector such as a photoelectric tube or a laser beam may be used.

In FIG. 3, reference numeral 13 denotes a movable roller 6.
a, 6b, 6c. In the above embodiment, the movable rollers 6a, 6b, and 6c are respectively provided with the urging means 1
0 and the abnormality detecting means 11 are provided, but may be provided on at least one or more of the movable rollers 6a, 6b, 6c.
Furthermore, the above-described movable rollers 6a, 6b, 6c have been described on the case where the carrier side of the belt main body 3 is provided. However, in the case of transporting the conveyed goods also on the return side, the belt insertion hole 4b on the return side is centered O. It is also possible to apply to the three rollers 6a, 6b, 6c disposed above.

Next, the operation in the embodiment of the present invention will be described only on the carrier side. First, on the carrier side, a load (not shown) is sequentially supplied to and conveyed onto the belt main body 3, that is, the maximum loading capacity (generally, the pipe cross-sectional area of the belt main body × 0. 75) When the load is supplied onto the belt body 3 or the load is loaded in the width direction of the belt body 3 and a load exceeding the maximum load occurs, the belt body 3 The movable rollers 6a, 6b, 6c and the fixed rollers 6d,
6e and 6f, and hooks in a belt insertion hole 4a formed in the support plate 1.

Then, the movable rollers 6a, 6b, 6c
As shown by the one-dot chain line in FIG. 3, the belt body 3 swings in the transport direction of the belt body 3 against the elastic force of the urging means 10 by the transport force of the belt body 3, and the movable rollers 6a, 6b, 6c swing. It contacts the abnormality detecting means 11 (a limit switch in this embodiment) disposed in the direction, and detects an abnormality in the load amount.
When the abnormality detecting means 11 detects an abnormality in the load capacity, a driving means such as a driving motor (not shown) of the pipe conveyor is immediately stopped by a signal from the abnormality detecting means 11.

As a result, the belt body 3 may be damaged,
Problems such as damage to the equipment such as deformation of the roller stand and roller bracket can be prevented beforehand. As a result, rolling during belt running can be prevented, and the problem that the pipe conveyor cannot be adjusted can be solved. Also, if you use the same configuration on the return side,
Similar operations can be performed.

[0019]

As described above, according to the present invention, at least one or more of the six rollers provided on the support plate, which are located above the center of the belt insertion hole, are moved in the belt moving direction. And three fixed rollers are located below the center of the belt insertion hole. The movable roller is always attached to the support frame side via urging means having a predetermined elastic force. When the belt body is in operation, when a load equal to or greater than the maximum load capacity is generated on the belt body and the movable roller swings in the transfer direction of the belt body, the load capacity abnormality of the belt body is detected, and Since the abnormality detecting means for outputting the stop signal to the driving means of the pipe conveyor is provided,
When a load exceeding the maximum load capacity occurs during operation of the pipe conveyor, the load capacity abnormality is quickly detected and the operation is stopped, and damage to the belt body, damage to the equipment, and the belt body rolling phenomenon, etc. are observed beforehand. Can be prevented,
There is an effect that can be applied to existing equipment.

[Brief description of the drawings]

FIG. 1 is a front view of a support plate of a pipe conveyor showing one embodiment of the present invention.

FIG. 2 is a plan view taken along the line AA of FIG. 1;

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Support plate 2 Support frame 3 Belt body 4a, 4b Belt insertion hole 5 Bracket 5a Bracket tip side 5b Pin 5c Bracket base end 6a, 6b, 6c Movable roller 6d, 6e, 6f Fixed roller 7 Bolt 8 Nut Reference Signs List 9 spring 10 biasing means 11 abnormality detecting means 12 support member 13 stopper O center of belt insertion hole

Continued on the front page (72) Inventor Etsuro Machida 1-11-2 Haramachi, Fukaya-shi, Saitama

Claims (6)

[Claims] 1. A support frame having a support plate attached to a transport line of a pipe conveyor is erected at a predetermined interval, and a carrier side and a return side are provided on a peripheral portion of a belt insertion hole formed in the support plate. In a pipe conveyor provided with a plurality of rollers for supporting a belt main body, at least one or more rollers located above the center of the belt insertion hole among the six rollers provided on the support plate may be used. A movable roller that swings in the direction of movement of the belt body, three rollers located below the center of the belt insertion hole are fixed rollers, and the movable roller is connected to the movable roller through urging means having a predetermined elastic force. When the movable roller oscillates in the transfer direction of the belt body due to a load greater than or equal to the maximum load applied to the belt body during operation of the belt body,
A pipe conveyor provided with an overload detection means, wherein an abnormality detection means for detecting an abnormality in a load amount of a belt body and outputting a stop signal to a driving means of the pipe conveyor is provided. 2. The pipe conveyor according to claim 1, wherein the movable roller and the abnormality detecting means for detecting an abnormality in the load amount are provided at least in the vicinity of the load supply section on the carrier side. . 3. The pipe conveyor according to claim 1, wherein said urging means is a spring. 4. The pipe conveyor according to claim 1, wherein said urging means is a fluid cylinder. 5. The pipe conveyor according to claim 1, wherein the abnormality detecting means is a limit switch. 6. The pipe conveyor according to claim 1, wherein said abnormality detecting means is an optical detector such as a photoelectric tube or a laser beam.